Ukraine's capital, which had seen relative calm recently, is back in Russia's crosshairs as NATO strengthens its troop presence in Eastern Europe. SUBSCRIBE FOR MORE VIDEOS AND NEWS http://www.youtube.com/subscription_center?add_user=losangelestimes https://www.latimes.com/subscription LET’S CONNECT: Facebook ► https://www.facebook.com/latimes Twitter ► https://twitter.com/LATimes Instagram ► https://www.instagram.com/latimes